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我国的碳酸盐风暴岩丰富多样,但前人对不同环境风暴岩的沉积作用、沉积序列和沉积模式的总结还不够完善.山东省中部上寒武统炒米店组碳酸盐风暴岩发育频繁,分布广,提供了全面分析风暴沉积作用的理想场所.基于该区详实的露头观察,可识别出冲刷面、渠模、丘状交错层理等典型的风暴沉积构造,以及砾屑灰岩、递变层理含砾砂屑灰岩-砂屑灰岩、纹层状粉-砂屑灰岩等风暴岩类型.根据砾屑颜色、磨圆度、排列方式、支撑结构、充填物等岩石学特征,研究区首要发育的砾屑灰岩可被细分为紧密堆积棱角状砾屑灰岩、基质支撑砾屑灰岩、砂屑支撑砾屑灰岩、水平-叠瓦状砾屑灰岩和放射状排列砾屑灰岩5种岩相类型,其分别归属于台前缓坡带原地-近源堆积、碎屑流、高密度-低密度浊流、风暴砾滩和风暴涡流沉积.对台前缓坡、台地边缘和开阔台地等不同环境的风暴沉积序列进行了归纳,建立了缓坡型碳酸盐台地风暴沉积的综合模式,并指出研究区频繁的风暴作用与全球气候变暖、海平面上升以及地震活动存在密切联系.研究表明较多台地边缘发育的大型渠模构造,其充填砾屑呈放射状排列,指示了渠模的风暴涡流成因.
Carbonate stormstones in our country are rich and varied, but the sedimentation, depositional sequences and sedimentary models of various stormstones have not been comprehensively summarized by our predecessors.Carbonate stormstones in the Upper Cambrian Fried Rice Store in Central Shandong Province are frequently developed , Provide a comprehensive analysis of the ideal place for storm sedimentation.Based on the detailed outcrop observation in the area, typical storm sedimentary structures such as scouring surface, channel form and mound-shaped interlacing can be identified, Gradient gravel gravel sandy limestone - sand litter limestone, laminated layered powder - sandy litter and other storm rock type.According to the gravel color, roundness, arrangement, support structure, filling and other petrology The gravelly limestone, which is mainly developed in the study area, can be subdivided into closely-packed hornblende conglomerate limestone, matrix-supporting gravelly limestone, gravel-bearing gravelly limestone, horizontal-shinglesitic conglomerate limestone and Five kinds of lithofacies are radially arranged, which belong to the in-situ source-sediment accumulation, debris flow, high-density-low density turbidity, storm gravel and storm eddy deposition, respectively. Gentle slope, the edge of the platform and the open platform and other different rings , And the storm sedimentation sequence of the gentle slope was established, and a comprehensive model of the storm deposition in the gentle slope carbonate platform was established, and pointed out that the frequent storm action in the study area is closely related to global warming, sea level rise and seismicity. The large-scale drains that developed on the margin of the platform are radially arranged with gravel pack filling, which indicates the genesis of the turbulent eddy of drains.